1 // -*- C++ -*- 2 3 // Copyright (C) 2005, 2006 Free Software Foundation, Inc. 4 // 5 // This file is part of the GNU ISO C++ Library. This library is free 6 // software; you can redistribute it and/or modify it under the terms 7 // of the GNU General Public License as published by the Free Software 8 // Foundation; either version 2, or (at your option) any later 9 // version. 10 11 // This library is distributed in the hope that it will be useful, but 12 // WITHOUT ANY WARRANTY; without even the implied warranty of 13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 // General Public License for more details. 15 16 // You should have received a copy of the GNU General Public License 17 // along with this library; see the file COPYING. If not, write to 18 // the Free Software Foundation, 59 Temple Place - Suite 330, Boston, 19 // MA 02111-1307, USA. 20 21 // As a special exception, you may use this file as part of a free 22 // software library without restriction. Specifically, if other files 23 // instantiate templates or use macros or inline functions from this 24 // file, or you compile this file and link it with other files to 25 // produce an executable, this file does not by itself cause the 26 // resulting executable to be covered by the GNU General Public 27 // License. This exception does not however invalidate any other 28 // reasons why the executable file might be covered by the GNU General 29 // Public License. 30 31 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL. 32 33 // Permission to use, copy, modify, sell, and distribute this software 34 // is hereby granted without fee, provided that the above copyright 35 // notice appears in all copies, and that both that copyright notice 36 // and this permission notice appear in supporting documentation. None 37 // of the above authors, nor IBM Haifa Research Laboratories, make any 38 // representation about the suitability of this software for any 39 // purpose. It is provided "as is" without express or implied 40 // warranty. 41 42 /** 43 * @file sample_range_hashing.hpp 44 * Contains a range hashing policy. 45 */ 46 47 #ifndef PB_DS_SAMPLE_RANGE_HASHING_HPP 48 #define PB_DS_SAMPLE_RANGE_HASHING_HPP 49 50 // A sample range-hashing functor. 51 class sample_range_hashing 52 { 53 54 public: 55 56 // Size type. 57 typedef size_t size_type; 58 59 public: 60 61 // Default constructor. 62 sample_range_hashing(); 63 64 // Copy constructor. 65 sample_range_hashing(const sample_range_hashing& other); 66 67 // Swaps content. 68 inline void 69 swap(sample_range_hashing& other); 70 71 protected: 72 73 // Notifies the policy object that the container's __size has changed to size. 74 void 75 notify_resized(size_type size); 76 77 // Transforms the __hash value hash into a ranged-hash value. 78 inline size_type 79 operator()(size_type hash) const; 80 81 }; 82 83 #endif // #ifndef PB_DS_SAMPLE_RANGE_HASHING_HPP 84